Abstract
Although 5-fluorouracil (5-FU) is an important anticancer agent for the treatment of colorectal cancer, drug resistance, and dose-related side effects limit the effectiveness of the treatment. Therefore, developing new pharmaceuticals with effective and low toxicity is critically necessary for cancer therapy. This study aimed to investigate the cytotoxic activity of the Clitocybe nebularis mushroom extract (CN) on HT-29 human colon cancer cells. A series of in vitro experiments were performed on the HT-29, Caco-2, and HEK-293 cells, which includes cytotoxicity, drug interaction, colony formation, cell cycle, and migration assays. In addition, qRT-PCR experiment was also performed to investigate the potential molecular mechanisms of action of CN on the proliferation of colon cancer cell line. Our results show that CN exhibited selective cytotoxic activity on HT-29 and Caco-2 colon cancer cells, whereas no cytotoxic effect was observed on normal HEK-293 cells. With the combination of CN and 5‑FU, their cytotoxic activity on HT-29 cells was significantly increased compared to their use alone. In addition, the combination of CN and 5-FU also showed synergistic anticancer activity through cell cycle arrest in the S phase. The results also show that p21, p27, and p53 expression levels increased as a result of CN treatment. Our in vitro findings show that CN has a synergistic effect with 5-FU by inhibiting cell proliferation of colon cancer cells and inducing cell cycle arrest in the S phase.
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Abbreviations
- CN:
-
Clitocybe nebularis extract
- CRC:
-
Colorectal cancer
- 5-FU:
-
5-Fluorouracil
- CI:
-
Combination index
- DRI:
-
Dose reduction index
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Acknowledgements
We thank Dr. Ilgaz Akata for identifying mushroom samples.
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This work was funded by Ankara Universitesi (Grant no.19H0430003, Ozlem Yildirim).
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Onar, O., Telkoparan-Akillilar, P. & Yildirim, O. Clitocybe nebularis extract and 5‑fluorouracil synergistically inhibit the growth of HT-29 colorectal cancer cells by inducing the S phase arrest. 3 Biotech 13, 48 (2023). https://doi.org/10.1007/s13205-023-03471-9
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DOI: https://doi.org/10.1007/s13205-023-03471-9